Swift-XRT Survey of Fermi Unassociated Sources


These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.


Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

3FGL J1820.4-3217

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1820.4-3217 Swift-XRT detections in the field for 3FGL J1820.4-3217

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 21 20.63 -32 17 50.42 6.52 (6 ± 2) x 10-3 14 3.370 3.373

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 20 21.14 -32 25 13.35 7.48 (3.3 ± 1.4) x 10-3 8 2.294 2.381

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1820.4-3217 Swift-XRT image with known radio, optical and UV sources for 3FGL J1820.4-3217

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J182020.2-321916s 18 20 20.18 -32 19 15.96 2.32 XMM-NEWTON
2 3XMM J182010.1-321520 18 20 10.18 -32 15 20.88 3.58 XMM-NEWTON
3 3XMM J182031.8-322200s 18 20 31.75 -32 22 00.12 5.06 XMM-NEWTON
4 3XMM J182010.7-322128s 18 20 10.73 -32 21 27.36 5.22 XMM-NEWTON
3XMM J182010.8-322128 18 20 10.85 -32 21 28.44 5.23 XMM-NEWTON
5 3XMM J182008.4-321256 18 20 08.47 -32 12 56.16 5.45 XMM-NEWTON
6 3XMM J181958.7-321703s 18 19 58.70 -32 17 03.48 5.52 XMM-NEWTON
7 3XMM J182011.1-322225 18 20 11.11 -32 22 25.68 6.01 XMM-NEWTON
3XMM J182011.1-322225 18 20 11.21 -32 22 26.76 6.01 XMM-NEWTON
3XMM J182011.2-322227s 18 20 11.16 -32 22 27.48 6.03 XMM-NEWTON
8 3XMM J182004.0-322150 18 20 04.61 -32 21 50.04 6.41 XMM-NEWTON
3XMM J182004.1-322151s 18 20 04.10 -32 21 51.48 6.41 XMM-NEWTON
3XMM J182004.0-322150 18 20 03.98 -32 21 50.76 6.43 XMM-NEWTON
9 3XMM J181956.5-321959s 18 19 56.45 -32 19 59.16 6.62 XMM-NEWTON
3XMM J181956.3-321959 18 19 56.40 -32 19 58.80 6.63 XMM-NEWTON
3XMM J181956.3-321959 18 19 56.38 -32 19 59.88 6.64 XMM-NEWTON
10 3XMM J182001.0-322145s 18 20 01.20 -32 21 44.64 6.80 XMM-NEWTON
3XMM J182000.7-322144 18 20 00.77 -32 21 44.28 6.84 XMM-NEWTON
11 3XMM J182022.0-322418 18 20 22.10 -32 24 18.00 7.17 XMM-NEWTON
12 1RXS J182051.3-322228 18 20 51.31 -32 22 28.56 7.72 ROSAT
13 3XMM J181948.1-321735 18 19 48.12 -32 17 35.52 7.76 XMM-NEWTON
3XMM J181948.1-321734s 18 19 48.10 -32 17 34.08 7.77 XMM-NEWTON
3XMM J181947.3-321743 18 19 47.35 -32 17 43.44 7.93 XMM-NEWTON
14 3XMM J181944.7-321729s 18 19 44.66 -32 17 29.40 8.49 XMM-NEWTON
15 3XMM J181954.0-321137 18 19 54.10 -32 11 37.68 8.53 XMM-NEWTON
16 3XMM J181944.3-321831s 18 19 44.33 -32 18 30.96 8.66 XMM-NEWTON
3XMM J181944.2-321831 18 19 44.26 -32 18 31.32 8.67 XMM-NEWTON
3XMM J181944.2-321831 18 19 44.21 -32 18 30.96 8.68 XMM-NEWTON
17 3XMM J181943.2-321638s 18 19 43.20 -32 16 37.92 8.81 XMM-NEWTON
3XMM J181943.2-321635 18 19 43.20 -32 16 35.04 8.81 XMM-NEWTON
18 3XMM J181942.2-322201 18 19 42.31 -32 22 01.20 10.20 XMM-NEWTON
3XMM J181942.3-322202s 18 19 42.34 -32 22 01.92 10.21 XMM-NEWTON
3XMM J181942.2-322201 18 19 42.24 -32 22 02.64 10.23 XMM-NEWTON
19 3XMM J181937.3-322011s 18 19 37.34 -32 20 11.04 10.47 XMM-NEWTON
3XMM J181937.3-322009 18 19 37.32 -32 20 09.60 10.47 XMM-NEWTON
20 3XMM J181933.0-321623s 18 19 33.00 -32 16 22.44 10.98 XMM-NEWTON
3XMM J181932.9-321619 18 19 32.90 -32 16 19.92 11.00 XMM-NEWTON
21 3XMM J181935.8-322132s 18 19 35.83 -32 21 31.68 11.23 XMM-NEWTON
3XMM J181935.7-322131 18 19 35.76 -32 21 31.68 11.24 XMM-NEWTON
3XMM J181935.7-322131 18 19 35.74 -32 21 31.32 11.24 XMM-NEWTON
22 3XMM J182009.7-322832 18 20 09.72 -32 28 32.16 11.81 XMM-NEWTON
3XMM J182009.7-322832 18 20 09.67 -32 28 32.16 11.81 XMM-NEWTON
3XMM J182009.8-322833s 18 20 09.74 -32 28 33.24 11.83 XMM-NEWTON
23 3XMM J181930.5-322144s 18 19 30.55 -32 21 43.92 12.34 XMM-NEWTON
3XMM J181930.3-322140 18 19 30.29 -32 21 40.68 12.37 XMM-NEWTON
24 3XMM J181940.3-322513s 18 19 40.27 -32 25 12.72 12.38 XMM-NEWTON
25 3XMM J181935.5-322425 18 19 35.76 -32 24 24.84 12.64 XMM-NEWTON
3XMM J181935.7-322426s 18 19 35.66 -32 24 26.64 12.67 XMM-NEWTON
3XMM J181935.5-322425 18 19 35.47 -32 24 26.64 12.71 XMM-NEWTON
26 3XMM J181948.8-322731 18 19 48.77 -32 27 28.44 12.81 XMM-NEWTON
3XMM J181948.8-322731 18 19 48.86 -32 27 32.76 12.86 XMM-NEWTON
3XMM J181948.9-322733s 18 19 48.89 -32 27 33.12 12.86 XMM-NEWTON
27 3XMM J182000.6-322906 18 20 00.70 -32 29 06.72 12.99 XMM-NEWTON
3XMM J182000.7-322907s 18 20 00.67 -32 29 07.08 13.00 XMM-NEWTON
28 3XMM J181934.5-322505 18 19 34.56 -32 25 05.88 13.25 XMM-NEWTON
3XMM J181934.5-322506s 18 19 34.51 -32 25 06.24 13.26 XMM-NEWTON
3XMM J181934.5-322505 18 19 34.49 -32 25 05.88 13.26 XMM-NEWTON
3XMM J181933.3-322454 18 19 33.38 -32 24 54.36 13.34 XMM-NEWTON
3XMM J181933.4-322456s 18 19 33.41 -32 24 56.16 13.35 XMM-NEWTON
29 3XMM J181944.5-322743s 18 19 44.54 -32 27 42.84 13.55 XMM-NEWTON
3XMM J181944.5-322744 18 19 44.52 -32 27 45.00 13.58 XMM-NEWTON
30 3XMM J181948.7-322848s 18 19 48.72 -32 28 48.36 13.91 XMM-NEWTON
31 3XMM J181940.0-322826 18 19 40.20 -32 28 26.76 14.72 XMM-NEWTON
3XMM J181940.2-322829s 18 19 40.15 -32 28 28.92 14.73 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
[PME2013] J1820-3216 18 20 45.10 -32 16 08.04 4.41 AT2FGLUS
[SPT2015] ATCA J1820-3216 18 20 45.19 -32 16 09.12 4.43 FER2FUSRID
1 NVSS J182045-321621 18 20 45.60 -32 16 21.00 4.48 NVSS
2 NVSS J181951-321107 18 19 51.91 -32 11 08.16 9.21 NVSS
3 NVSS J182027-320724 18 20 27.70 -32 07 23.88 9.78 NVSS
4 NVSS J182050-320811 18 20 50.11 -32 08 11.04 10.45 NVSS
5 NVSS J182108-321108 18 21 08.71 -32 11 08.88 11.06 NVSS
MGPS J182108-321059 18 21 08.50 -32 10 59.88 11.10 MGPS2
6 NVSS J182032-320548 18 20 32.81 -32 05 48.84 11.47 NVSS
7 NVSS J181932-322021 18 19 32.59 -32 20 21.12 11.48 NVSS
8 NVSS J181954-320649 18 19 54.00 -32 06 48.96 12.22 NVSS
9 NVSS J181936-322815 18 19 36.60 -32 28 14.88 15.05 NVSS
MGPS J181936-322819 18 19 36.41 -32 28 19.92 15.14 MGPS2

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